Offshore northeast to easterly flow is expected to strengthen across the Pacific Northwest and into portions of northern California, with warm to hot temperatures. Elevated to critical conditions are likely as east to northeast winds 10-25 mph with gusts 30-50 mph develop amid relative humidity of 6-20% for the Okanogan Valley, Columbia Basin, and near and west of the Cascades in Oregon and Washington, with gusty offshore winds in portions of northern California as well. Winds are forecast to peak during the evening, with poor overnight humidity recovery of 15-35%. Breezy and dry northerly winds are also likely across the remainder of the northern Intermountain West but with cooler temperatures. Hurricane Kay will approach the southern California coast, with strong east winds and low relative humidity possible, especially for the Transverse Ranges, before the arrival of increased moisture. Isolated mixed wet and dry thunderstorms are possible across the southern Sierra to the central coast as well. Good relative humidity recovery is likely tonight for much of southern California as Kay nears, with heavy rain and flooding, especially near recent burn scars, for far southern California into southwest Arizona. Showers with scattered thunderstorms and cool temperatures are likely to continue along and east of the Divide in Montana and Wyoming through the central Plains and into the western Great Lakes. Isolated mixed wet and dry thunderstorms are likely in the greater Four Corners area, with a surge of Gulf of Mexico moisture bringing widespread showers and thunderstorms to the Southeast, including possible flooding.